There are also other vlans that I use for private-vlans that are not
interfaces.

!
vlan 203
name vlan-203-MyPrivateVlan
private-vlan community
!

These private vlans have a bunch of ports in them.
So with "snmpwalk -v 2c -c public <switchIP> ifHCInOCtet" I can get
traffic for each interface, I actually want to get traffic for each
private-vlan. That amounts to the sum of the traffic of all the ports
in a private vlan.

Is there any way to get this with snmpwalk? Or any snmpwalk query that
will give any info about private vlans?